Why a non-standard port? Because the standard SSH port (22) is targeted by script kiddies these days, using simple brute force attacks to gain access to your box. Usually you'll only notice a bunch of login attempts in your system log, so no real harm done. But better safe then sorry, so by moving Dropbear/OpenSSH1) to a non-standard port, your logs will be not be cluttered with these attempts. Of course a full port scan will still reveal the port, but it's now more difficult to find the port, and that's what we need.

Enable SSHD to allow remote access to Freesco. You can use SSH
and perform any console commands including this setup script.
WARNING:y - Enable service worldwide, insecure!
s - Enable service locally, secure (recommended)
n - Disable service
NOTE: If you are going to export this service from a local computer
using standard port (22), you must not answer s.
47 Enable SSH server y/s/n [y]?

type “y” and <enter>, when asked :

471 SSH port [22]? 222

type the port number you would like ssh to use (for instance 222 ) followed by <enter>